Oscillating valve



May 23, 1933. J. M. THRASHER OSCILLAI'ING VALVE 2 Sheets-Sheet 1 FiledJune 19, 1930 INV E N TOR .M. THRASH ATTORNEYS 8 E 17 w m y 3, 1933. J.M. THRASHER 1,911;o44

OSCILLATING VALVE Filed June 19, 1930 2 Sheets-Sheet 2 F IG. 5. FIG. 6.

// WJIZ! INVENTOR J.M.THRASHER Patented May 23, 1933 UNITED STATESPATENT OFFICE OSCILLATING VALVE Application filed ll'une 19, 1930.Serial No. 482,276.

The type of oscillating valve to which my 4-4 of Fig. 1 in the directionof the arrows.

invention pertains has one or more flat disks which bear against apartition, the partition having one or more ports and the dlSkS havingopenings or passages to'align with the ports and thus allow passage ofthe liquids or gases through the valve. My valve 15 arranged so that afull opening may be obtained with less than a complete rotation of thevalve stem.

A feature of my invention is a construction by which a leakage adjacentthe valve stem is prevented .and in which the disks bear against thefixed partition with sufiicient force to prevent passage of liquids orgases between the disks and the partition and thus limit the chances ofleakage adjacent the stem.

Another feature of my invention embodies the construction of thepartition having a sin le arcuate port of the full size to give a fulopening of the valve, or with a series of ports which are preferablyformed circular and of diflerent diameters so that a graduated openingof the valve may be made by uncovering one or more of these graduatedports and aligning these with the openings or passages in the rotatabledisks.

Another feature of my invention is having what I may term an upper diskwelded or similarly secured to the valve stem, the stem being slidablein the valve packing, and the stem of the disk being forced into contactwith the fixed partition by a spring; and when I use two disks, one oneach side of the partition, the lower disk on the lower end of the stemis pressed downwardly into contact with the partition by aspring.

My invention in several forms is illustrated in connection with theaccompanying drawings, in which Fig. 1 illustrates a vertical sectiontaken on the line 11 of Fig. 2 in thedirection of the arrows. Fig. 2 isa horizontal section taken on the line 2-2 of Fig. 1 in the direction ofthe arrows.

Fig. 3 is a horizontal sectionon the line 3-3 of F 1 in the direction ofthe arrows. Fig. 4 is a horizontal section on the line Fig. 5 is a sideelevation artly broken open of a modified form of va ve having .the sinle rotatable disk.

ig. 6 is a side elevation partly broken open of another modification ofmy invention having a pair of rotatable disks, and the diaphragm havinga series of graduated ports.

Fig. 7 is a section on the line 77 of Fig. 6 in the direction of thearrows.

Fig. 8 is a longitudinal section through the valve designed forconnecting in a line of pipe. I

Fig. 9 is a detail section through an alternative type of valve having acone-shaped r seat and cone-shaped valve disks.

Referring first to the construction of Figs. 1 through 4: The valve isprovided with a valve casing or housing 11 having an intake opening 12and an outlet 13. The outlet is shown constructed in a ring 14 which maybe screwed into the casing. A cap 15 is also screwed into the casing andis provided with a bore 16 therethrough, through which extends a valvestem 17, there being usual packing 18, a packing gland to form a gas orIiquid-tight seal for the stem.

The valve has the usual type of handle and has a pointer 19secured tothe stem, the stem preferably having a flat section 20 to engage apartly circular and partly flat opening in a horizontal section 21 ofthe pointer. This pointer has a vertically dependingport 22 withalateral finger 23 which indicates with graduations 24 marked on the cap15 the degree of opening of the valve. There are a pair of verticalbuttons 25 and 26 on a projecting shoulder 27 of the cap so that thefinger 23 on meetin these abutments registers the closed and ully openedposition of the valve.

l The valve housing has a partition 28 constructed integral therewithand forming a valve seat, this partition having a central bore 29 with abeveled edge 30. This parti- 95 tion has an arcuate port 31 which isindicated as having terminal edges 32 and 33, and inner and outerarcuate edges 34 and 35, these being formed concentric, and, in theillustration, the port forms substantially half of 10% a circle. Thepartition is provided with a socket 36 having a spring 37 therein with aball 38 resting on the spring.

The stem is indicated as having an upper disk 39 secured thereto by aweld or braze 40. The disk has a cone-shaped central section 41 bearingon the beveled surface 30 of the partition. A compression spring 42 iscoiled on the valve stem and bears on the upper disk 39 and on a washer43 Which abuts against the inner part of the cap 15, thus pressing theupper disk in firm relation to the partition. The disk is provided witha series of recesses 44 to engage the ball 38 and thus indicate thedifi'erent positions of the valve so that a person may note'by the feelof the valve in opening or closing the condition of the valve. This isconvenient for operating the valve in the darkwhen the position of thepointer cannot be seen.

In this type of valve there is a lower disk 45 which has a centralopening 46 flattened on each side to engage flattened surfaces 47 of thelower part of the stem. The bottom end of the stem is screw threaded asindicated at 48, and has a nut 49 thereon with a Washer 50, there beinga compression spring 51' bearing between the washer and the lower disk,thus forcing this lower disk into tight engagement with the bottomsurface of the artition 28.

T e upper and lower disks are each provided with a similar opening orpassage 51. This is formed arcuate and has terminal ends 52 and 53formed by radial lines. and" inner and outer concentric, curved edges 54and 55. The various edges of the openings in the disks register with theedges of the port 31 in the fixed partition. In the illustration thevalve is shown half open and it Will be seen that it is only necessaryto turn the valve stem half a revolution to shift from the fully closedto the fully open position, and that any graduated degree of opening mabe obtained. This construction allows a 111 valve opening to be obtainedvery quickly by the half rotation of the stem.

In the construction of Fig. 5, the valve housing and other details aresubstantially the same as in Figs. 1 through 4, having the same-type ofpartition with a port therein, a

' similar upper valve disk with a similar open- *ing, but thisconstruction omits the lower disk, and in order to obtain an additionalpressure of the disk on the valve partition or seat a washer 56 is usedhaving a rim 57 hearing on the under side of the partition and forcedinto engagement therewith by a spring similar to the spring 51.

In the construction illustrated in Figs. 6 and 7 the valve housing issubstantially the same as illustrated in connection with Figs. 1 through4, but in this case a partition 58 forming the valve seat has a seriesof ports 59 graduated in diameter, these being illustrated as circular,and having one port of a small diameter and graduated from this to thelargest port of a large diameter. This valve has upper and lower disks60 and 61 mounted on the valve stem in the same manner as Figs. 1through 4, but in this case passages or openings 62 through these diskshave arcuate ends 63 and 64, and inner and outer concentric,curvededgesj 65'! and 66. The upper disk 60' is indicated as providedwith a lug 67 extending radially beyond its periphery and operating in asegmental groove 68 in the valve housing, which groove is provided withend abutments 69 and 70, and forms a'limit for the motion of the valvein opening andclosing.

In this case a shoulder. 71 on a valve cap 72 does not have anyabutments thereon but the pointer 19 is of'thes'ametype as illustratedin Figs. land 2, and indicateson graduations on the cap the differentpositions of the valve. This arrangement also uses the ball operating inthe recesses to indicate the position of the valve opening.

In the construction illustrated in Fig. 8, a valve housing 73 has anintake end 74 and a discharge end 75, and utilizes a central parti tion76 forming a valve seat with one or more ports 77. A valve stem 78 hasupper and lower disks 79 and 80 thereon, which may be mounted in thesame manner as the disks of Fig. 1. These are provided with openings orpassages 82 and 83 to align with the port or ports 77 A plug 84 isindicated as screwedinto the bottom of the valve casing, and this may beremovable to give access to the lower disk and to the nut and spring onthe lower on of the valve stem. This t pe of constructiondsjndicated ashaving the all operating in the recesses to indicate the position of thevalve opening, and uses the same type of lug operating on the turn ofthe buttons as Fig. 7. i

An important feature of my valve is that the pressure on the intake sidepresses the upper disk tight on the partition seat and thus makes aclose seal so that there is no dgnger of the valve leaking when it isshut o My valve is particularly adapted for boiler feed work in which,sometimes, there is a back pressure from the boiler should the checkvalve between the feed valve and the boiler not function properly. Inthis case, with the upper and lower disks on each side of the seat, theback pressure presses upon the lower disk and thus forms a seal againsta back leak from the boiler. This is very convenient, especially when itis necessary to repack the valve stem.

For boiler feed work I find it more advantageous to use a valve havingthe differently sized ports through the valve seat, as a betterregulation of the flow of feed water An important feature of myinvention also is that there are no threads on the valve stem 80 thatthe stem is not subject to any motion except a rotary motion and, asabove mentioned, this is only a part of a circle.

On account of the high pressure exerted against the valve seat it isdesirable to make this of a hard material or have a hard wearingsurface. 'Ihis high pressure also, sometimm, makes it diflicult to openor close the valve and it is sometimes necessary to attach a lever tothe valve stem instead of a wheellike handle.

In the construction of Fig. 9 I indicate part of a valve housin 85having a artition 86 therein. This isi ustrated as avmg a conical uppersurface 87 and also a conical lower surface 88, there being either asingle or a plurality of graduated ports 89 through the partition. Avalve stem 90 has an upper valve disk 91 which is conically shaped andbears on the surface 87 of the seat. A compression spring 92 on the stembears on the upper disk. A lower disk 93 is shiftable on the stem and isalso conical on the stem, hearing on the lower surface 88 of the seat. Acompression spring 94 thrusts this upwardly. These valve disks areprovided respectively with openings 95 and 96.

One advantage of my type of valve is that the valve disks and the seatscan be readily lubricated and, for instance, in Figs. 1 and 9, Iillustrate a nip le 97 suitable for alemite or like greasing whichconnects to a grease duct 98, this having diverging ducts 99 connectingto the face of the valve seat and the upper and lower disks.

the claims it is convenient to refer to the intake side of the valvepartition or seat as the pressure sidevand the discharge side as themdressure side. Thehvalhve is normally w; I H to operate Wit t e restive intake and discharges as describe in the specification, and thedisks on the disor non pressure side are pressed upy with suflicientforce by the spring on such side to form a closure even against theresmn-e of fluid passing through the valve. owever, my valve is quiteadapted to a reversal of pressures in which the discharge side of thevalve may have the reatest pressure-thereon. This causes the ower diskto bear tighter on the se ting artition than when it is merely helmlacey the s ring. Various changes may be made in the etails of constructionwithout departing from the irit or s50 me invention as defined by e a cI 1. A valve having a valve housing with a partition structure thereinhaving a port there I v I and forminga valve seat, astem having a w mthe partition and exmay be obtained than with the single large tendingtherethrough, one side of the seat ing the closure'element on thedischarge side v in close contact with the said partition.

2. A valve as claimed in claim 1, the stem having a compression springcoiled thereon and bearing against the closure element on the intakeside of the valve and a ainst a structure connected from the valveousing.

3. A valve having a valve housing with a partition separating theressure intake and non-pressure discharge si es of the valve and havinga port therethrough and having parallel upper and lower flat surfaces, arotatable stem extending through the partition and having a flat disk onthe pressure side secured to the stem, a second flat disk on thenonpressnre side of the partition slidably mounted on the said stem, thesaid disks bearing on opposite sides of the partition and each having anopening adapted to register with the port in t e partition, and means onthe stem thrusting the second disk into close contact with thepartition.

4. A valve as claimed in claim 3, the stem having a compression springcoiled thereon, said spring bearing on the disk secured to the stem andon part of the valve housing.

5. A valve having a valve housing with a partition structure thereinseparating the intake and discharge sides of the valve and having a portthercthrough forming a valve seat, a rotatable stem having a bearing inthe partition and extending centrally therethrough, one side of the seatbeing on the intake and the other on the discharge side of the valve, aclosure element mounted on the stem on each side of the partition eachhaving an opening, the element on the intake side bein r secured to thestem and on the discharge side ing slidable on the stem, and meansinterconnecting the said elements with the stem and the valve housing toforce said elements into close contact with the seat of the partition.

6. A valve having a valve housing with a partition structure thereinseparati the pressure intake and non-pressure disc arge sides of thevalve and having a port therethrough and forming a valve seat on its0pposite sides, at least one side being conical. a rotatable steinextending centrally through the partition and having a bearing thereinand having a disk-like closure element mounted on the stem on thepressure and non-pressure sides of the partition, said elementsconformin in shape to the seat of the partition, the sai closureelements having aligned openings to align with the port of thepartition.

7. A va ve having a valve housing with a partition structure separatingthe pressure III intake and non-pressure discharge sides of the valveand having a port therethrough and forming a valve seat on its oppositesides, said seats being conical, a rotatable stem extending through thepartition and having a bearing therein, a closure diskmounted on thestern on the pressure and non pressure sides of the partition andconforming in shape to the seat on such side, said disks being rotatablewith the stem, and each disk having aligned openings to register withthe port.

8. A valve having a valve housing with a partition structure thereinseparating the pressure intake and non pressure discharge sides of thevalve and having a port therethrough and forming a valve seat on its0pposite sides, the seats being conically shaped with the apexescontiguous, a rotatable stem centrally mounted in the partition having abearing therein, a disk secured to the stem for rotation on the pressureand non pressure sides of the partition, each disk being coned toconform to the seat on such side, each disk having an opening inalignment and adapted for alignment with the said port.

9. A valve having a valve housing with a partition structure thereinseparating the pressure intake and non pressure discharge sides of thevalve and having a port therethrough, said partition having valve seatson its opposite sides, said seats being cone shaped with the apexescontiguous and at the center, a rotatably mounted stem extending throughthe partition and having a cone shaped valve disk on the pressure andnon pressure sides of the partition bearing on the seat, each diskhaving an o ening, said openings being in alignment an adapted to alignwith forcing each disk into close engagement with the seat on which itbears.

10. A valve as claimed in claim 9, the stem on the discharge side havingan extension with one of the springs coiled thereon and bearing againstthe disk on such side and against the end of the stem.

11. A valve as claimed in claim 9, the stem on the intake side havingone of the coiled Z springs thereon bearing against the disk on suchside and against the valve housing, and on the discharge side the stemhaving an extension with the other spring coiled thereon and bearingagainst the end of the stem and the disk on the discharge side.

12. A valve having a valve housing with a partition therein separatingthe pressure intake and non-pressure discharge sides of the valve andhaving a port therethrough, said partition having conically shaped seatson its intake and discharge sides with the apexes contiguous, a stemextending through the valve housing from one side and having a bearingin the partition and being provided with an extension beyond thepartition, a conically shaped disk mounted on the stem on each side ofthe artition, each hearing on the valve seat, and each disk having anopening in ali ment to align with the port of the partition, means torotate the stem, a coiled spring on the extension of the stem andbearing against one of the disks and the stem end, and a coiled springon the stem bearing against the other disk and a ainst the housinwhereby said disks are orced into close tting engagement with theirrespective seats on the pressure intake and non pressure sides of thevalve.

In testimony whereof I have signed my name to this specification.

JOHN M. THRASHER.

the said port, and a spring means

